x-nucleo-nfc05a1

Trying to get this board to poll keys. I have created some code that does not seem to work. All I get through the serial bus is an empty value of zero.
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#include<SPI.h> //Library for SPI
#define LED 7
#define command 0
#define poll 3
#define readnfc 2
#define reset 1

byte Mastersend,Mastereceive;
int x;
void setup (void)

{
Serial.begin(9600); //Starts Serial Communication at Baud Rate 115200

pinMode(LED,OUTPUT); //Sets pin 7 as Output

SPI.begin(); //Begins the SPI commnuication
SPI.setClockDivider(SPI_CLOCK_DIV8); //Sets clock for SPI communication at 8 (16/8=2Mhz)
digitalWrite(SS,HIGH); // Setting SlaveSelect as HIGH (So master doesnt connnect with slave)
SPI.setDataMode(SPI_MODE0);
digitalWrite(SS, LOW);
delay(100);
Mastereceive=SPI.transfer(command);
delay(100);
digitalWrite(SS,HIGH);

}

void loop(void)
{

digitalWrite(SS, LOW); //Starts communication with Slave connected to master

Mastereceive=SPI.transfer(poll); //Send the mastersend value to slave also receives value from slave
Serial.println(Mastereceive);
delay(1000);
}